Siemens sinumerik 840D sl Function Manual page 522

Figure 2-8
Changes in orientation
Based on the above observations, a different behavior also results when the orientation of
the machining head is changed while the clearance control is active.
In the following diagram the normal case is shown on the left (compensation vector == tool
orientation vector); and the case with the programmed compensation vector is shown on the
right.
Figure 2-9 Change in orientation of the machining head
Special functions: Clearance Control (TE1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Programmable compensation vector
Detailed description
2.2 Clearance control
17